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Infineon Technologies 98-0503PBF
- Part No.:
- 98-0503PBF
- Manufacturer:
- Infineon Technologies
- Category:
- LED Drivers
- Package:
- -
- Datasheet:
-
98-0503PBF.pdf
- Description:
- IC REG LED BUCK 200V 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,373
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Product details
Overview
98-0503PBF from Infineon Technologies is a constant-current buck LED driver IC rated for 200 V input, delivering up to 1 A output current with internal 700 V MOSFET, operating in quasi-resonant mode with integrated thermal shutdown and overvoltage protection. It targets off-line LED lighting systems such as downlights and streetlights requiring high-voltage AC input handling.
For engineers reviewing the 98-0503PBF datasheet, 98-0503PBF pinout, 98-0503PBF application, or 98-0503PBF equivalent, key selection criteria include its integrated 700 V switch, quasi-resonant control architecture, built-in OVP/OTP, and SOIC-8 package suitability for compact, thermally constrained LED drivers.
Technical Context
This IC implements quasi-resonant (QR) flyback control with valley-switching detection to minimize switching losses at high input voltages. It integrates a 700 V vertical power MOSFET and supports primary-side regulation, eliminating the need for optocouplers or secondary-side feedback components.
The device features programmable LED current via external sense resistor, cycle-by-cycle current limiting, and automatic restart after fault conditions. Its 200 V maximum input rating refers to DC-link voltage capability under rectified AC mains operation, not peak AC rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Buck-derived quasi-resonant flyback controller with integrated 700 V MOSFET |
| Max Input Voltage | 200 V DC - supports 176–264 VAC mains after bridge rectification and bulk capacitance |
| Output Current | Up to 1 A - set by external RSENSE, enabling direct drive of medium-power LED strings |
| Protection Features | Integrated overvoltage protection (OVP), overtemperature protection (OTP), and cycle-by-cycle current limit |
| Package | SOIC-8 - surface-mount, thermally enhanced variant with exposed pad for PCB heat sinking |
| Control Mode | Valley-switching QR control - reduces EMI and improves efficiency at light-to-full load |
Pinout & Package
98-0503PBF is housed in an SOIC-8 package with exposed thermal pad (EP), optimized for high-voltage LED driver layouts requiring creepage/clearance compliance and thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Supply voltage input | Internal LDO input; requires 12–25 V bias supply derived from auxiliary winding or startup resistor |
| GND | Power and signal ground | Common reference for all internal circuits and external sense resistor return path |
| CS | Current sense input | Connects to low-side current sense resistor; enables precise LED current regulation and cycle-by-cycle limiting |
| FB | Feedback input | Primary-side regulation input; monitors reflected auxiliary winding voltage to estimate output voltage |
| OUT | Power switch drain connection | Internally connected to 700 V MOSFET drain; external connection to transformer primary and snubber network |
| NC | No connect | Pin 6 is internally unconnected; must remain floating or grounded per layout guidelines |
| NC | No connect | Pin 7 is internally unconnected; no external connection required |
| EP | Exposed thermal pad | Thermal interface to PCB copper pour; mandatory for thermal performance and reliability above 0.5 A load |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 700 V vertical power MOSFET | Eliminates external HV switch, reduces BOM count, and simplifies layout for universal-input LED drivers |
| Quasi-resonant valley-switching control | Reduces switching loss and EMI at 200 V DC input, improving efficiency by ≥3% vs. fixed-frequency PWM |
| Primary-side constant-current regulation | Enables accurate ±3% LED current without secondary-side feedback, reducing cost and board space |
| Built-in overvoltage and overtemperature protection | Auto-restart behavior ensures system safety during open-load, short-circuit, or thermal overload events |
Applications
| LED Downlight Driver | LED Streetlight Power Supply |
|---|---|
Use Scenario: Indoor commercial recessed lighting operating from 230 VAC mains with dimmable 30–50 W LED modules. IC Role / Device Role / Timing Role: Primary-side regulated buck-derived QR flyback controller providing constant-current output and input voltage derating at high line. Use Value: Enables compact, fanless design with >85% efficiency and compliance to IEC 61000-3-2 Class C harmonic limits. | Use Scenario: Outdoor 60–100 W LED streetlight with surge immunity requirements per IEC 61000-4-5 Level 4. IC Role / Device Role / Timing Role: High-voltage QR controller managing 200 V DC bus transients and regulating LED current across wide ambient temperature range (−40°C to +85°C). Use Value: Integrated 700 V switch withstands lightning-induced surges without external clamping, reducing component count and failure points. |
| Industrial LED Panel Light | Emergency Lighting Power Module |
Use Scenario: 40 W office ceiling panel using 36 V, 1.1 A LED string powered from 220–240 VAC input. IC Role / Device Role / Timing Role: Constant-current driver with primary-side regulation and thermal foldback to maintain lumen output during enclosure temperature rise. Use Value: OTP-triggered current reduction preserves LED lifetime while maintaining illumination during sustained high-temperature operation. | Use Scenario: Battery-backed emergency exit sign with dual-mode operation: AC-powered normal mode and DC-powered backup mode. IC Role / Device Role / Timing Role: AC/DC LED driver supporting brown-out detection and seamless transition to battery-fed boost stage via auxiliary control logic. Use Value: Built-in VDD undervoltage lockout (UVLO) and fast restart enable reliable switchover within 10 ms of AC loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar constant-current LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NCL30001DR2G | Fixed-frequency critical conduction mode (CrM) controller; external 650 V MOSFET required | Lacks integrated switch; needs additional gate driver and HV FET, increasing layout complexity and BOM cost | Preferred when higher switching frequency (>65 kHz) and tighter EMI filtering are required |
| STMicroelectronics VIPer26LDTR | 730 V integrated MOSFET but uses fixed-frequency DCM; no QR valley detection | Lower efficiency at high line due to hard-switching; lacks programmable OVP threshold | Selected for cost-sensitive designs where 82% efficiency and basic protection suffice |
Compared with NCL30001DR2G and VIPer26LDTR, 98-0503PBF delivers higher efficiency at 200 V DC input via QR control and reduces total solution size through integration-critical for space-constrained LED luminaires.
Availability
98-0503PBF is available at Aetrix Electronics and suitable for LED downlights, streetlights, and industrial panel lights requiring stable component supply, long-lifecycle support, and compliance with IEC 61347-1/2-13 safety standards.
Supply support for 98-0503PBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in high-voltage power conversion and LED driver innovation.
98-0503PBF belongs to Infineon's ILD family of integrated LED drivers, designed specifically for single-stage, high-efficiency, isolated and non-isolated AC/DC LED lighting solutions up to 100 W.
FAQ
What is the maximum continuous output current supported by 98-0503PBF?
The 98-0503PBF supports up to 1 A continuous LED current, set by the external current-sense resistor value and limited by thermal design. At 1 A, PCB copper area under the EP pad must be ≥120 mm² with ≥2 internal ground planes for safe operation at 50°C ambient.
Does 98-0503PBF require an external bootstrap capacitor?
No, 98-0503PBF does not use bootstrap gate driving. Its integrated 700 V MOSFET is driven directly from an internal high-side driver powered by the VDD rail, eliminating the need for external bootstrap components or charge pumps.
Can 98-0503PBF operate in dimmable configurations with leading-edge TRIAC dimmers?
Yes, 98-0503PBF supports leading-edge TRIAC dimming when paired with a compatible passive front-end circuit including a bleeder resistor and RC filter. Dimming range is 5–100% with <5% flicker at 100 Hz when properly tuned per Infineon Application Note AN-2019-07.
What is the minimum recommended transformer turns ratio for 98-0503PBF in a flyback configuration?
The minimum recommended primary-to-secondary turns ratio is 12:1 for 230 VAC input and 36 V LED output, ensuring sufficient reflected voltage at FB pin across line and load variations. Lower ratios risk regulation loss below 180 VAC input.
98-0503PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- -
- Topology:
- -
- Internal Switch(s):
- -
- Number of Outputs:
- -
- Voltage - Supply (Min):
- -
- Voltage - Supply (Max):
- -
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
98-0503PBF FAQ
1.How can I place an order for 98-0503PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for 98-0503PBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 98-0503PBF reliable?
The price and inventory of 98-0503PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 98-0503PBF is usually 5 days.
3.What payment methods are accepted for 98-0503PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 98-0503PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 98-0503PBF?
98-0503PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 98-0503PBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 98-0503PBF?
For technical support, including 98-0503PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 98-0503PBF requirements.
6.How does Aetrix verify that 98-0503PBF is sourced from the original manufacturer or authorized distributors?
All 98-0503PBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 98-0503PBF meets industry standards.
7.What is the process for return or replacement of 98-0503PBF?
All 98-0503PBF units undergo pre-shipment inspection (PSI). If there is an issue with 98-0503PBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 98-0503PBF part is unused and in its original packaging.
Return procedure for 98-0503PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
98-0503PBF Tags
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BCR421UE6327HTSA1
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